Question: Which South Australian House of Assembly by-election had the most ballots cast?
Paraphrase: Which South Australian House of Assembly by-election had the most ballots cast?
SPARQL (Wikidata): select ?ent where { ?ent wdt:P31 wd:Q51879476 . ?ent wdt:P1868 ?obj } ORDER BY DESC(?obj)LIMIT 5 
Answer: 2014 Fisher state by-election, 2015 Davenport state by-election, 2012 Port Adelaide state by-election, 2019 Cheltenham state by-election, 1992 Kavel state by-election